diff --git a/etc/caseDicts/postProcessing/pressure/pressureDifference.cfg b/etc/caseDicts/postProcessing/pressure/pressureDifference.cfg
index ef3c1f8d7f..2548174692 100644
--- a/etc/caseDicts/postProcessing/pressure/pressureDifference.cfg
+++ b/etc/caseDicts/postProcessing/pressure/pressureDifference.cfg
@@ -22,12 +22,14 @@ functions
         #includeEtc "caseDicts/postProcessing/surfaceFieldValue/surfaceRegion.cfg"
         operation       areaAverage;
         fields          (p);
+        $region1;
     }
     region2
     {
         #includeEtc "caseDicts/postProcessing/surfaceFieldValue/surfaceRegion.cfg"
         operation       areaAverage;
         fields          (p);
+        $region2;
     }
 }
 
diff --git a/etc/caseDicts/postProcessing/pressure/pressureDifferencePatch.cfg b/etc/caseDicts/postProcessing/pressure/pressureDifferencePatch.cfg
index 71134ca909..36c21c8729 100644
--- a/etc/caseDicts/postProcessing/pressure/pressureDifferencePatch.cfg
+++ b/etc/caseDicts/postProcessing/pressure/pressureDifferencePatch.cfg
@@ -6,8 +6,6 @@
      \\/     M anipulation  |
 \*---------------------------------------------------------------------------*/
 
-#includeEtc "caseDicts/postProcessing/pressure/pressureDifference.cfg"
-
 region1
 {
     regionType  patch;
@@ -19,4 +17,6 @@ region2
     name        $patch2;
 }
 
+#includeEtc "caseDicts/postProcessing/pressure/pressureDifference.cfg"
+
 // ************************************************************************* //
diff --git a/etc/caseDicts/postProcessing/pressure/pressureDifferenceSurface.cfg b/etc/caseDicts/postProcessing/pressure/pressureDifferenceSurface.cfg
index 873b616d1d..204715339d 100644
--- a/etc/caseDicts/postProcessing/pressure/pressureDifferenceSurface.cfg
+++ b/etc/caseDicts/postProcessing/pressure/pressureDifferenceSurface.cfg
@@ -6,16 +6,14 @@
      \\/     M anipulation  |
 \*---------------------------------------------------------------------------*/
 
-#includeEtc "caseDicts/postProcessing/pressure/pressureDifference.cfg"
-
 region1
 {
-    regionType sampledSurface;
-
+    regionType  sampledSurface;
+    name        $triSurface1;
     sampledSurfaceDict
     {
         type        meshedSurface;
-        regionType  cells;
+        source      cells;
         interpolate true;
         surface     $triSurface1;
     }
@@ -24,10 +22,13 @@ region1
 region2
 {
     $region1;
+    name        $triSurface2;
     sampledSurfaceDict
     {
         surface     $triSurface2;
     }
 }
 
+#includeEtc "caseDicts/postProcessing/pressure/pressureDifference.cfg"
+
 // ************************************************************************* //